In vivo bioimaging method and system using near-infrared light and complementary metal-oxide-semiconductor image sensor

1. An in vivo bioimaging method, the method comprising:

irradiating, by a near-infrared (NIR) irradiator, NIR light onto a living body;

converting the NIR light passed through the living body, into visible light using a module of upconversion nanoparticles (UCNPs), wherein the module of UCNPs is disposed at an opposite side of the living body from the NIR irradiator;

receiving, by a complementary metal-oxide-semiconductor (CMOS) image sensor, the visible light converted by the module of UCNPs; and

generating a bioimage of the living body by an image analyzer.

2. The method of claim 1 , wherein the irradiating of the NIR light comprises irradiating NIR light of various wavelength bands required to view anatomical features of the living body, and

wherein the converting of the NIR light comprises:

passing only a specific wavelength band of the NIR light passed through the living body, using an NIR pass filter; and

converting the NIR light of the specific wavelength band into visible light using the UCNPs.

3. The method of claim 1 , wherein the NIR light has a wavelength band ranging from 900 to 1600 nm, and

wherein the visible light has a wavelength band ranging from 500 to 700 nm.

4. The method of claim 1 , wherein the CMOS image sensor comprises a silicon (Si)-based CMOS image sensor.

5. An in vivo bioimaging system comprising:

a complementary metal-oxide-semiconductor (CMOS) image sensor;

a module of upconversion nanoparticles (UCNPs) provided on the CMOS image sensor to convert near-infrared (NIR) light into visible light;

an NIR pass filter provided on the module of UCNPs; and

an NIR irradiator provided over the NIR pass filter and irradiating the NIR light onto a living body,

wherein the module of UCNPs is disposed at an opposite side of the living body from the NIR irradiator, and

the CMOS image sensor receives the visible light converted by the module of UCNPs.

6. The in vivo bioimaging system of claim 5 ,

wherein the CMOS image sensor comprises a silicon (Si)-based CMOS image sensor.

7. The in vivo bioimaging system of claim 5 ,

wherein the module of UCNPs comprises a plurality of UCNPs, and

wherein the module of the UCNPs is provided on each pixel of the CMOS image sensor.

8. The in vivo bioimaging system of claim 5 ,

wherein the NIR light has various wavelength bands required to view anatomical features of the living body, and

wherein the NIR pass filter passes only a specific wavelength band of the NIR light.

9. The in vivo bioimaging system of claim 5 , further comprising:

a microlens provided on the CMOS image sensor.

10. The in vivo bioimaging system of claim 5 , further comprising:

an image analyzer generating an anatomical image of the living body.